CVE-2026-18888: high-severity vulnerability in MongoDB BI Connector ODBC Driver
MongoDB BI Connector ODBC driver may write outside an allocated buffer when retrieving large floating point values as character data
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.1epss 0.4%
The MongoDB BI Connector ODBC Driver converts floating point column values into text without checking that the result fits within the destination buffer. When an application reads a sufficiently large floating point value as text, the driver may write beyond the end of that buffer and corrupt adjacent memory. A user who can store data in a collection read through the BI Connector could use this to crash the application performing the read.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
MongoDB · BI Connector ODBC DriverRelated CVEs — MongoDB BI Connector ODBC Driver
In the same product, most dangerous first.
CVE-2026-19001CRITICALMongoDB BI Connector ODBC driver may write outside an allocated buffer when handling oversized catalog object namesEPSS 0.5%CVE-2026-19004HIGHMongoDB BI Connector ODBC Driver Memory-Safety Issue When Handling Stored Procedure Output ParametersEPSS 0.5%CVE-2026-81532HIGHBI Connector ODBC Driver Improper Bounds Checking on Cursor Name Leading to Memory CorruptionEPSS 0.5%CVE-2026-19002HIGHCrafted database metadata may cause memory corruption in MongoDB BI Connector ODBC DriverEPSS 0.4%CVE-2026-81533MEDIUMMongoDB BI Connector ODBC Driver Memory-Safety Issue When Parsing Oversized LIMIT ValuesEPSS 0.4%CVE-2026-19003HIGHMongoDB BI Connector ODBC driver may write outside an allocated buffer when the setup dialog opens a data source with oversized path settingsEPSS 0.2%